ANSI/ISA-92.04.01-1 : 2007(R2013)

ANSI/ISA-92.04.01 – Part I-2007 (R2013), Performance Requirements for Instruments Used to Detect Oxygen-Deficient/Oxygen-Enriched Atmospheres, establishes detailed construction, performance and testing criteria for portable, mobile and stationary electrical instruments designed to monitor oxygen levels in various environments. This standard addresses critical safety aspects by specifying alarm functions, accuracy, durability under environmental stresses and operational requirements such as calibration, battery life and interference resistance. It supports the development and use of reliable oxygen-monitoring instruments that help maintain safe atmospheric conditions, particularly in hazardous or industrial settings, by providing clear technical benchmarks for manufacturers and users to follow.